The ADM660ANZ is a CMOS Switched-capacitor Voltage Converter that can be used to either invert the input supply voltage giving VOUT = -VIN or double it (ADM660 only) giving VOUT = 2 x VIN. The inverting scheme is ideal for generating a negative rail in single power supply systems. Only two small external capacitors are needed for the charge pump. Output current up to 50mA with greater than 90% efficiency are achievable, while 100mA achieves greater than 80% efficiency.
